Re: [Very RFC 27/46] powernv/pci: Clear reserved PE freezes

2019-11-26 Thread Alexey Kardashevskiy
On 20/11/2019 12:28, Oliver O'Halloran wrote: > When we scan an empty slot the PHB gets an Unsupported Request from the > downstream bridge when there's no device present at that BDFN. Some older > PHBs (p7-IOC) don't allow further config space accesses while the PE is > frozen, so clear it

[Very RFC 27/46] powernv/pci: Clear reserved PE freezes

2019-11-19 Thread Oliver O'Halloran
When we scan an empty slot the PHB gets an Unsupported Request from the downstream bridge when there's no device present at that BDFN. Some older PHBs (p7-IOC) don't allow further config space accesses while the PE is frozen, so clear it here without bothering with the diagnostic log.